using LiteCqrs;
using TeleWave.Application.Common.Interfaces;
using TeleWave.Application.Common.Models;

namespace TeleWave.Application.Metadata.SearchShows;

public sealed class SearchShowMetadataQueryHandler(IMetadataProviderResolver resolver)
    : IQueryHandler<SearchShowMetadataQuery, Result<IReadOnlyList<MetadataCandidate>>>
{
    public async Task<Result<IReadOnlyList<MetadataCandidate>>> Handle(
        SearchShowMetadataQuery query,
        CancellationToken cancellationToken
    )
    {
        var provider = resolver.Resolve(query.Provider);
        if (provider is null)
            return Result.Failure<IReadOnlyList<MetadataCandidate>>(MetadataErrors.ProviderNotAvailable);

        if (string.IsNullOrWhiteSpace(query.Query))
            return Result.Success<IReadOnlyList<MetadataCandidate>>([]);

        var results = await provider.SearchShowsAsync(query.Query, cancellationToken);
        return Result.Success(results);
    }
}